Unscrupulous shop owners trying to sell food that is past its best could be undone by a new design of packaging.

    Proposed by Japanese outfit TO-GENKYO, the Fresh Label visibly changes to indicate how fresh the food is.

    It detects the levels of ammonia being emitted by the food. As food ages, ammonia levels increase and the label will change colour to reflect this. It will eventually become so dark that the label's barcode becomes unreadable, preventing it from being sold once it has reached its use-by date.

    This is one of the entries for the Good Design Awards. Spoon & Tamago are previewing the awards, picking the best of the entries each week.

    不道德的店主試圖出售過期的食品，他可以通過一個新設計的包裝將其恢復原樣。

    日本的 TO-GENKYO 機構提出，新鮮標簽的明顯變化可以指出食品是多么新鮮。

    它檢測食品放出的氨的水平。隨著食品陳放，氨的水平會提高，標簽將會改變顏色來反映這種情況。它最終會變得非常黑，使得標簽的條碼都變得不能讀取，防止它在一旦已經達到它的標示日期時被賣出。

    這是優秀設計作品獎中的一項。Spoon & Tamago 每周都挑選最好的作品，現在正在預檢獎品。